Green Synthesized Palladium Coated Titanium Nanotube Arrays for Simultaneous Azo-Dye Degradation and Hydrogen Production
Autor: | Hsing-Wang Li, Kang-Shin Chen, Yen-Ping Peng, Yung-Chang Lin, Chien-Er Huang, Hsiao-Wu Lai, Yuan-Chung Lin, Shih-Wei Huang, Chia-Hung Chen |
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Rok vydání: | 2020 |
Předmět: |
Nanotube
Materials science Inorganic chemistry chemistry.chemical_element 02 engineering and technology lcsh:Chemical technology 010402 general chemistry Electrochemistry 01 natural sciences Catalysis lcsh:Chemistry chemistry.chemical_compound X-ray photoelectron spectroscopy lcsh:TP1-1185 Physical and Theoretical Chemistry Photocurrent green synthesis photoelectrochemical system palladium 021001 nanoscience & nanotechnology 0104 chemical sciences Dielectric spectroscopy titanium dioxide nanotube arrays lcsh:QD1-999 chemistry Titanium dioxide 0210 nano-technology Palladium Titanium |
Zdroj: | Catalysts, Vol 10, Iss 1330, p 1330 (2020) Catalysts Volume 10 Issue 11 |
ISSN: | 2073-4344 |
Popis: | In this study, electrodes of titanium dioxide nanotube arrays (TNAs) were successfully synthesized by applying the anodic oxidation etching method, as well as the use of green synthetic technology to add reducing agents of tea or coffee to reduce metal palladium from palladium chloride. Synthesis of palladium modified TNAs (Pd/TNAs) was conducted by the microwave hydrothermal method after the metal palladium was reduced. In order to identify the surface structure, light absorption and elemental composition, TNAs and Pd/TNAs were characterized by X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). Furthermore, to test the photocurrent density, electron resistance, and hydroxyl radicals by I-t plot, electrochemistry impedance spectroscopy (EIS), and electron paramagnetic resonance (EPR) were investigated. The photocurrent (4.0 mA/cm2) of Pd/TNAs-C (using coffee as the reducing agent) at +1.0 V (vs. Ag/AgCl) was higher than that of the pure TNAs (1.5 mA/cm2), illustrating that Pd/TNAs-C can effectively separate photogenerated electrons and holes. Pd/TNAs is a favorable material as a photoanode for the photoelectrochemical (PEC) removal of organic pollutants in wastewater. |
Databáze: | OpenAIRE |
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